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Finding the Fourth Proportional to 19,957.92, 29,917.68 and 8,866.08

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Solution

The fourth proportional to 19,957.92, 29,917.68 and 8,866.08 is: 13,290.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,957.92 : 29,917.68 = 8,866.08 : x
  2. Step 2: Convert to fraction form
    19,957.92/29,917.68 = 8,866.08/x
  3. Step 3: Cross multiply
    19,957.92x = 29,917.68 × 8,866.08
  4. Step 4: Simplify right side
    19,957.92x = 265,252,544.29
  5. Step 5: Solve for x
    x = 265,252,544.29/19,957.92
  6. Step 6: Final answer
    x = 13,290.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.